The activity coefficients of KCl in KCl + KAc + H2O system were determined at 298.15K from emf measurements for different total ionic strengths:0.1,0.5,1.0,1.5,2.0 and 2.5mol.

• 用电势法测定298.；15K时，KCl在KCl＋KAc＋H2O体系中的活度系数，混合电解质溶液的总离子强度分别为0